樸素和半樸素貝葉斯

時間 2020-12-30

原文原文鏈接

引入貝葉斯決策論是概率框架下實施決策的基本方法，它基於概率和誤判誤差的最小化來進行判別，是一種分類問題的解法。原理首先，將數據及其屬性記爲x，對於多分類任務，其可能的取值有N種，設爲{ c1,c2,c3.....cN c 1 , c 2 , c 3 . . . . . c N }，統稱爲c。數據x的正確分類記爲 cx c x 。於是將算法的正確率記爲： Ptrue=∑P(cx|x)=P(

>>阅读原文<<

1. 樸素貝葉斯
2. 樸素貝葉斯爲何樸素？
更多相關文章...
• RSS , <link>, 和 <description> 元素</a> - <a href="http://www.voidme.com/rss" target="_blank" title="RSS 教程"> RSS 教程</a></li> <li> • <a href="http://www.voidme.com/rss/rss-tag-title-link-description-channel" target="_blank" title="RSS <title>, <link>, 和 <description> 元素"> RSS <title>, <link>, 和 <description> 元素</a> - <a href="http://www.voidme.com/rss" target="_blank" title="RSS 教程"> RSS 教程</a></li> <li> • <a href="http://www.voidme.com/content/xjqfguhuql" target="_blank" title="IntelliJ IDEA 代碼格式化配置和快捷鍵"> IntelliJ IDEA 代碼格式化配置和快捷鍵</a> </li> <li> • <a href="http://www.voidme.com/content/kzhcgkljmp-bsx" target="_blank" title="適用於PHP初學者的學習線路和建議"> 適用於PHP初學者的學習線路和建議</a> </li> </ul> <div class="margin-top-20"></div> <div> <div></div> </div> <div class="margin-top-20"></div> <div class="relative">相關標籤/搜索</div> <ul> <a target='_blank' href="http://hk.javashuo.com/tag/%E6%A8%B8%E7%B4%A0%E8%B2%9D%E8%91%89%E6%96%AF" title="樸素貝葉斯"> <span class="new-label">樸素貝葉斯</span></a> <a target='_blank' href="http://hk.javashuo.com/tag/%E6%A8%B8%E7%B4%A0" title="樸素"> <span class="new-label">樸素</span></a> <a target='_blank' href="http://hk.javashuo.com/tag/%E6%A8%B8%E7%B4%A0%E7%84%A1%E8%8F%AF" title="樸素無華"> <span class="new-label">樸素無華</span></a> <a target='_blank' href="http://hk.javashuo.com/tag/sklearn%E6%A8%B8%E7%B4%A0%E8%B2%9D%E8%91%89%E6%96%AF%E7%AE%97%E6%B3%95" title="sklearn樸素貝葉斯算法"> <span class="new-label">sklearn樸素貝葉斯算法</span></a> <a target='_blank' href="http://hk.javashuo.com/tag/%E8%B3%AA%E6%A8%B8" title="質樸"> <span class="new-label">質樸</span></a> <a target='_blank' href="http://hk.javashuo.com/tag/%E6%A8%B8%E5%AF%A6" title="樸實"> <span class="new-label">樸實</span></a> <a target='_blank' href="http://hk.javashuo.com/tag/%E8%B2%9D%E8%91%89" title="貝葉"> <span class="new-label">貝葉</span></a> <a target='_blank' href="http://hk.javashuo.com/tag/%E8%B2%9D%E8%91%89%E6%96%AF%E5%88%86%E6%9E%90%E2%91%A5" title="貝葉斯分析⑥"> <span class="new-label">貝葉斯分析⑥</span></a> <a href="http://www.voidme.com/xlink" target="_blank" title="XLink 和 XPointer 教程"> <span class="new-label">XLink 和 XPointer 教程</span></a> <a href="http://www.voidme.com/mybatis" target="_blank" title="MyBatis教程"> <span class="new-label">MyBatis教程</span></a> <a href="http://www.voidme.com/php" target="_blank" title="PHP教程"> <span class="new-label">PHP教程</span></a> </ul> </div> <div class="article_social"> <div class="article_like"> <div class="circle circle-like" id="my_zan" data_id="eEvIVb6"></div> </div> <div class="clear"></div> <div class="share"> <span class="share-left bdsharebuttonbox" data-tag="share_1"> <a href="#" class="bds_more icon-share" data-cmd="more"> <span class="bds_count" data-cmd="count" title="累计分享0次">0</span> </a> </span> <div class="share-right action action-share bdsharebuttonbox" data-tag="share_1"> <span class="bdshare"> <a href="#" class="bds_sinaweibo icon-weibo" data-cmd="tsina" title="分享到新浪微博">分享到微博</a> <a href="#" class="bds_weixin icon-wechat" data-cmd="weixin" title="分享到微信">分享到微信</a> <a href="#" class="bds_qq icon-qq" data-cmd="sqq" title="分享到QQ好友">分享到QQ</a> </span> </div> </div> <div class="clear"></div> <div class="bottom_plink huodong-detail-plink-banner clearfix"> </div> </div> <script> $(function () { $("#originfo").text("https://blog.csdn.net/bravery_again/article/details/81159131"); $("#originfo").hover(function () { $("#originfo").attr("href", "/link?url=https://blog.csdn.net/bravery_again/article/details/81159131"); }, function () { $("#originfo").attr("href", "javascript:void()"); }); }); </script> <script src="http://static2.javashuo.com/static/script/article.js?time=1735430479762" type="text/javascript"></script> </div> <div class="span3 article_right_side"> <div class="right_top"> <div id="right_site_articles" class="article_detail_bg"> <div class="article-part-title"> <span>每日一句</span> </div> <ul class="side_article_list"> 每一个你不满意的现在，都有一个你没有努力的曾经。 </ul> </div><script async src="https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js"></script>  <ins class="adsbygoogle" style="display:block" data-ad-client="ca-pub-6208739752673518" data-ad-slot="5830279121" data-ad-format="auto" data-full-width-responsive="true"></ins> <script> (adsbygoogle = window.adsbygoogle || []).push({}); </script> <div id="right_site_articles"> <div class="article-part-title"> <span>最新文章</span> </div> <ul class="side_article_list"> <li class="side_article_list_item">1. <a href="http://hk.javashuo.com/article/p-fhdidmpc-xh.html" target="_blank" title="部署Hadoop（3.3.0）僞分佈式集羣"> 部署Hadoop（3.3.0）僞分佈式集羣 </a> </li> <li class="side_article_list_item">2. <a href="http://hk.javashuo.com/article/p-nluvcznm-xh.html" target="_blank" title="從0開始搭建hadoop僞分佈式集羣（三：Zookeeper）"> 從0開始搭建hadoop僞分佈式集羣（三：Zookeeper） </a> </li> <li class="side_article_list_item">3. <a href="http://hk.javashuo.com/article/p-duvrjsay-xh.html" target="_blank" title="centos7 vmware 搭建集羣"> centos7 vmware 搭建集羣 </a> </li> <li class="side_article_list_item">4. <a href="http://hk.javashuo.com/article/p-boljaocb-xh.html" target="_blank" title="jsp的page指令"> jsp的page指令 </a> </li> <li class="side_article_list_item">5. <a href="http://hk.javashuo.com/article/p-reqlblpt-xh.html" target="_blank" title="Sql Server 2008R2 安裝教程"> Sql Server 2008R2 安裝教程 </a> </li> <li class="side_article_list_item">6. <a href="http://hk.javashuo.com/article/p-glepaddg-xh.html" target="_blank" title="python：模塊導入import問題總結"> python：模塊導入import問題總結 </a> </li> <li class="side_article_list_item">7. <a href="http://hk.javashuo.com/article/p-ghcwjcxr-xh.html" target="_blank" title="Java控制修飾符，子類與父類，組合重載覆蓋等問題"> Java控制修飾符，子類與父類，組合重載覆蓋等問題 </a> </li> <li class="side_article_list_item">8. <a href="http://hk.javashuo.com/article/p-mmdyogsv-xh.html" target="_blank" title="（實測）Discuz修改論壇最後發表的帖子的鏈接爲靜態地址"> （實測）Discuz修改論壇最後發表的帖子的鏈接爲靜態地址 </a> </li> <li class="side_article_list_item">9. <a href="http://hk.javashuo.com/article/p-whuuyljt-xh.html" target="_blank" title="java參數傳遞時，究竟傳遞的是什麼"> java參數傳遞時，究竟傳遞的是什麼 </a> </li> <li class="side_article_list_item">10. <a href="http://hk.javashuo.com/article/p-bngzkgdp-xh.html" target="_blank" title="Linux---文件查看（4）"> Linux---文件查看（4） </a> </li> </ul> </div> </div> <div class="operate_zone"> <div id="right_site_articles" class="article_detail_bg margin-top10"> <div class="article-part-title"> <span><a href="/contact" target="_blank">本站公眾號</a></span> </div> <div class="side_article_list user-head"> <span style="color: #5ba607;font-size:14px;"> 歡迎關注本站公眾號,獲取更多信息</span><br/> <img src="http://open.weixin.qq.com/qr/code?username=develong"/> </div> </div> <div id="right_site_articles"> <div class="article-part-title"> <span>相關文章</span> </div> <ul class="side_article_list"> <li class="side_article_list_item">1. <a href="http://hk.javashuo.com/article/p-mbigcnix-gv.html" target="_blank" title="樸素貝葉斯"> 樸素貝葉斯 </a> </li> <li class="side_article_list_item">2. <a href="http://hk.javashuo.com/article/p-ccsudoqe-hs.html" target="_blank" title="樸素貝葉斯爲何樸素？"> 樸素貝葉斯爲何樸素？ </a> </li> </ul> <div style='padding-left:10px;font-size:14px;padding-bottom:10px;'> <a href='http://hk.javashuo.com/relative/p-ghwivcor-pz.html' target='_blank' title="樸素和半樸素貝葉斯的相關文章"> >>更多相關文章<< </a> </div> </div> </div> </div> </div> <script type="text/javascript"> $('table').each(function (i) { var size = $(this).children().size(); if (size > 1) { $(this).attr('class', "table table-bordered"); } else if (size == 1) { var e11 = $(this).children(":first"); var e1 = e11[0]; var name = e1.nodeName.toLowerCase(); if ("tbody" == name) { if (e1.children.length > 1) { $(this).attr('class', "table table-bordered"); } else if (e1.children.length == 1) { var e12 = e1.children[0]; var name2 = e12.nodeName.toLowerCase(); if ("tr" == name2) { if (e12.children.length > 1) { $(this).attr('class', "table table-bordered"); } } } } } }); window.page = 0; window.last = 0; window.first = true; resize_article_image('#nei', 550); + (function($){ window._bd_share_config = { common: { "bdText": "【" + $("title").text() + "】" + $(".post-content p:lt(2)").text(), "bdMini": "2", "bdMiniList": false, "bdPic": $(".post-content img:first") ? $(".post-content img:first").attr("src") : "", "bdStyle": "0", "bdSize": "24" }, share: [{ bdCustomStyle: 'http://static2.javashuo.com/static/css/share.css' }], }; with(document) 0[(getElementsByTagName("head")[0] || body).appendChild(createElement("script")).src = "http://bdimg.share.baidu.com/static/api/js/share.js?cdnversion=" + ~ ( - new Date() / 36e5)]; })(window.jQuery); </script> </div> <script type="text/javascript" src="http://static2.javashuo.com/static/plugin/highlight/highlight.pack.js"></script> <link href="http://static2.javashuo.com/static/plugin/highlight/styles/docco.css" media="screen" rel="stylesheet" type="text/css" /> <script type="text/javascript"> $('pre').each(function(i, e) { hljs.highlightBlock(e, "<span class='indent'> </span>", false) }); </script> <div class="footer"> <div class="footer-inner" style="padding-top: 50px;padding-bottom: 50px"> <a href="http://hk.javashuo.com/contact" target="_blank">聯繫我們</a> <a href="http://hk.javashuo.com/search">最近搜索</a> <a href="http://hk.javashuo.com/recent">最新文章</a> <script type="text/javascript" src="https://v1.cnzz.com/z_stat.php?id=1279585947&web_id=1279585947"></script> <a href="https://beian.miit.gov.cn/" target="_blank">沪ICP备13005482号-10</a> <a href="http://www.voidme.com/mybatis" target="_blank">MyBatis教程</a> <a href="http://www.voidme.com/sql" target="_blank">SQL 教程</a> <a href="http://www.voidme.com/mysql" target="_blank">MySQL教程</a> <a href="http://www.voidme.com/java" target="_blank">Java 教程</a> <a href="http://www.voidme.com/thymeleaf" target="_blank">Thymeleaf 教程</a> <a href="http://www.voidme.com/hibernate" target="_blank">Hibernate教程</a> <a href="http://www.voidme.com/spring" target="_blank">Spring教程 </a> <a href="http://www.voidme.com/redis" target="_blank">Redis教程 </a> </div> <div style="display:none;"> <script> var _hmt = _hmt || []; (function() { var hm = document.createElement("script"); hm.src = "https://hm.baidu.com/hm.js?2936bf9a19a3d5abb5c9c726af070b7c"; var s = document.getElementsByTagName("script")[0]; s.parentNode.insertBefore(hm, s); })(); </script> </div> </div> <script type="text/javascript" src="http://static2.javashuo.com/static/script/tip.js?time=1735430479762" async></script> </body> </html>